<template>
  <div>
    <!-- 图片上传组件辅助 -->
    <el-upload
      class="avatar-uploader quill-img"
      :action="uploadImgUrl"
      name="file"
      :headers="headers"
      :show-file-list="false"
      :on-success="quillImgSuccess"
      :on-error="uploadError"
      :before-upload="quillImgBefore"
      accept=".jpg,.jpeg,.png,.gif"
    ></el-upload>

    <!-- 富文本组件 -->
    <quill-editor
      class="editor"
      v-model="content"
      ref="quillEditor"
      :options="editorOption"
      @blur="onEditorBlur($event)"
      @focus="onEditorFocus($event)"
      @change="onEditorChange($event)"
    ></quill-editor>

    <!-- 模板 -->
    <el-dialog
      title="文章"
      :visible.sync="articleModalVisible"
      width="60%"
      top="30vh"
      zIndex="2000"
    >
      <div class="template-content">
        <div class="left-sidebar">
          <div
            class="side-item"
            v-for="(item, index) in articles"
            :class="{ active: highlightIndex === index }"
            :key="index"
            @click="checkoutHighlightIndex(index)"
          >
            {{ item.title }}
          </div>
        </div>
        <div class="right-content" v-html="articleContent"></div>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="articleModalVisible = false">取 消</el-button>
        <el-button type="primary" @click="handleConfirm"> 确 定 </el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import { getToken } from '@/utils/auth'
import { fetchArticles } from '@/api/editor'

// 工具栏配置
const toolbarOptions = [
  ['bold', 'italic', 'underline', 'strike'], // 加粗 斜体 下划线 删除线
  ['blockquote', 'code-block'], // 引用  代码块
  [{ header: 1 }, { header: 2 }], // 样式标题
  [{ script: 'sub' }, { script: 'super' }], // 下标、上标
  [{ list: 'ordered' }, { list: 'bullet' }], // 有序、无序列表
  [{ indent: '-1' }, { indent: '+1' }], // 缩进
  [{ size: ['small', false, 'large', 'huge'] }], // 字体大小
  [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
  [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
  [{ align: [] }], // 对齐方式
  ['clean'], // 清除文本格式
  ['link', 'image', 'video'], // 链接、图片、视频
  // 新按钮配置
  ['insertMetric'],
]

import { quillEditor } from 'vue-quill-editor'
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'

export default {
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
    },
    /* 图片大小 */
    maxSize: {
      type: Number,
      default: 4000, //kb
    },
  },
  components: { quillEditor },
  data() {
    const self = this
    return {
      content: this.value,
      editorOption: {
        theme: 'snow', // or 'bubble'
        placeholder: '请输入内容',
        modules: {
          toolbar: {
            container: toolbarOptions,
            handlers: {
              image: function (value) {
                if (value) {
                  // 触发input框选择图片文件
                  document.querySelector('.quill-img input').click()
                } else {
                  this.quill.format('image', false)
                }
              },
              // 新按钮处理程序
              insertMetric: function () {
                // 处理按钮点击事件的逻辑
                self.articleModalVisible = true
              },
            },
          },
        },
        imageResize: true,
      },
      uploadImgUrl: process.env.VUE_APP_BASE_API + '/system/ossFile/upload', // 上传的图片服务器地址
      headers: {
        Authorization: 'Bearer ' + getToken(),
      },
      articles: [],
      articleModalVisible: false,
      highlightIndex: 0,
      articleContent: '',
    }
  },
  watch: {
    value: function () {
      debugger
      this.content = this.value
    },
  },
  mounted() {
    this.initButton()
    // 获取文章列表
    this.fetchArticles()
  },
  methods: {
    // 切换文章
    checkoutHighlightIndex(index) {
      this.highlightIndex = index
      this.articleContent = this.articles[index].content
    },
    // 获取文章
    async fetchArticles() {
      try {
        const result = await fetchArticles({ pageNum: 1, pageSize: 10 })
        this.articles = result.rows
        this.articleContent = this.articles[this.highlightIndex].content
      } catch (error) {
        console.log(error)
      }
    },
    //自定义按钮内容初始化
    initButton() {
      const sourceEditorButton = document.querySelector('.ql-insertMetric')
      sourceEditorButton.innerHTML =
        '<i class="el-icon-plus" style="font-size: 18px;color: black"></i>'
    },
    handleConfirm() {
      let quill = this.$refs.quillEditor.quill

      quill.focus()

      // 获取光标所在位置
      let length = quill.getSelection().index

      quill.clipboard.dangerouslyPasteHTML(length, this.articleContent)

      this.articleModalVisible = false
    },
    onEditorBlur() {
      //失去焦点事件
    },
    onEditorFocus() {
      //获得焦点事件
    },
    onEditorChange() {
      debugger
      //内容改变事件
      this.$emit('input', this.content)
    },

    // 富文本图片上传前
    quillImgBefore(file) {
      let fileType = file.type
      if (fileType === 'image/jpeg' || fileType === 'image/png') {
        return true
      } else {
        this.$message.error('请插入图片类型文件(jpg/jpeg/png)')
        return false
      }
    },

    quillImgSuccess(res, file) {
      debugger
      // res为图片服务器返回的数据
      // 获取富文本组件实例
      let quill = this.$refs.quillEditor.quill
      // 如果上传成功
      if (res.code == 200) {
        // 获取光标所在位置
        let length = quill.getSelection().index
        // 插入图片  res.url为服务器返回的图片地址
        var imgTag = '<img src="' + res.data + '" style="width: 100%;">'
        quill.clipboard.dangerouslyPasteHTML(length, imgTag)

        // quill.insertEmbed(length, "image", res.data);

        // const img = quill.getLeaf(length)[0].domNode; // 获取插入的图片元素
        // img.style.width = '100%'; // 设置宽度为100%
        // img.style.height = 'auto'; // 设置高度为自动调整
        // 调整光标到最后
        quill.setSelection(length + 1)
        //插入空格，触发内容变更
        length = quill.getSelection().index
        quill.insertText(length, ' ')
        // 调整光标到最后
        quill.setSelection(length + 1)
      } else {
        this.$message.error('图片插入失败')
      }
    },
    // 富文本图片上传失败
    uploadError() {
      // loading动画消失
      this.$message.error('图片插入失败')
    },
  },
}
</script>

<style>
.editor {
  line-height: normal !important;
  height: 192px;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode='link']::before {
  content: '请输入链接地址:';
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: '保存';
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode='video']::before {
  content: '请输入视频地址:';
}
.ql-snow .ql-tooltip[data-mode='image']::before {
  content: '请输入图片地址:';
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: '14px';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='small']::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='small']::before {
  content: '10px';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='large']::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='large']::before {
  content: '18px';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='huge']::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='huge']::before {
  content: '32px';
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: '文本';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='1']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='1']::before {
  content: '标题1';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='2']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='2']::before {
  content: '标题2';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='3']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='3']::before {
  content: '标题3';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='4']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='4']::before {
  content: '标题4';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='5']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='5']::before {
  content: '标题5';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='6']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='6']::before {
  content: '标题6';
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: '标准字体';
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value='serif']::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value='serif']::before {
  content: '衬线字体';
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value='monospace']::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value='monospace']::before {
  content: '等宽字体';
}
</style>

<style lang="scss">
.template-content {
  display: flex;
  justify-content: space-between;
  padding: 0 40px;
  .left-sidebar {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 400px;
    overflow-y: auto;
    .side-item {
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 10px 20px;
      border: solid 1px #999999;
      border-radius: 6px;
      box-sizing: border-box;
      width: 120px;
      line-height: 1.3;
      cursor: pointer;
      & + .side-item {
        margin-top: 10px;
      }
      &.active {
        background: #3471ff;
        border-color: #3471ff;
        color: #ffffff;
      }
    }
  }
  .right-content {
    flex: 1;
    margin-left: 20px;
    border: solid 1px #999999;
    border-radius: 6px;
    height: 400px;
    overflow-y: auto;
    box-sizing: border-box;
    padding: 10px;
  }
}
</style>
